A structure evaluation model of ubiquitous service ontology

Effective service description and modeling methodologies for dynamic service composition are essential techniques for providing autonomous services in ubiquitous environments. In our previous paper, we proposed "u-Service" as an abstract and structured concept for operations of devices in ubiquitous environments. In addition, we established the mechanism to structure u-Services in ontology. However, we did not present methods that are sufficient to analyze and evaluate the effectiveness of the u-Service ontology during the design time. Therefore, in this paper, we propose an evaluation model to guide and assess the efficient structure of a u-Service ontology. We extract a modeling goal and evaluation indicators according to characteristics of u-Service ontology and establish metrics to quantify them. The experimental results for service ontologies show that we can comprehensively analyze the design structure of u-Service ontology.